The Ring,piston, cataloged under National Stock Number 2815-00-273-0576, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Cooper Machinery Services Llc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-273-0576 |
| Primary Part Number | C-2155-L-11-1/2 |
| Item Name | Ring,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Cooper Machinery Services Llc |
| Status | ACTIVE |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Radial Wall Thickness | 0.3560 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 11.500 INCHES IN |
| Material | IRON OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| C-2155-L-11-1/2 PRIMARY | Cooper Machinery Services Llc (USA) |
| Reference | Meaning |
|---|---|
| NY125PCC2155L11 1-2 | 5/9 Secondary reference Cooper Cameron Corp Ajax-Superior Div |
| C2155L11 1-2 | 5/9 Secondary reference Cooper Cameron Corp Ajax-Superior Div |
| NY32PCC2155L11 1-2 | 5/9 Secondary reference Cooper Cameron Corp Ajax-Superior Div |
NSN 2815-00-273-0576 is a Ring,piston, manufactured by Cooper Machinery Services Llc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-273-0576 has 1 manufacturer part number on file: C-2155-L-11-1/2 (Cooper Machinery Services Llc).
Key specifications for C-2155-L-11-1/2: Overall Width: 0.3730 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Radial Wall Thickness: 0.3560 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN; Ring Style: CONCENTRIC. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.